High Strength Carriage Bolt

Product Overview

This carriage bolt is intended for buyers comparing geometry, assembly fit and material choice for OEM machinery and equipment assembly. Its configuration is defined by the domed carriage head, wrenching feature, shank or grip section and external thread. Before quotation, Hongyuan checks mating-part material, joint load and service environment and installation tool and access rather than assuming a catalogue size from the image.

Product Photo Gallery

Complete Product View

Head and Drive Detail

Thread / Body Detail

Side Profile Detail

Multi-Angle Product View

Product Specifications

Selection and RFQ Notes for This Carriage Bolt

Industrial product catalogues commonly separate comparable parts by standard, material/grade, diameter × length, pitch, thread coverage, head/drive and pack quantity. For this page those fields are treated as RFQ inputs, not assumed stock specifications.

• Size callout: State diameter × overall length, pitch, threaded length or grip length, and every non-standard shoulder, collar or bore dimension.
• Interface geometry: Confirm the domed carriage head, wrenching feature, shank or grip section and external thread, together with the mating-part dimensions and any installation clearance limit.
• Material condition: Specify heat-treated steel; property class, coating and test requirements to be stated; do not use the word “stainless” or “high strength” as the only acceptance requirement.
• Installation fit: Review mating-part material, joint load and service environment and installation tool and access for the intended OEM machinery and equipment assembly.
• Inspection: Identify the dimensions and functions that are critical to the carriage bolt, together with gauges, reports, sampling level and packaging protection.

Typical Applications

• Machinery, equipment and fabricated-frame assembly
• Structural, automotive and industrial component fastening
• OEM joints requiring removable high-strength clamping

Application suitability depends on the final material grade, dimensions, mating parts, installation method, load and service environment. Please share assembly details for engineering review.

Drawing-Controlled Structure and Key Features

• Drawing-controlled head
• Body and thread geometry
• Drawing-controlled dimensions, tolerances and thread engagement
• Material, finish and inspection plan configured for the application

The visible features shown in the photos support RFQ review, while the approved drawing, standard and agreed inspection criteria remain the controlling production documents.

Quality Inspection Process

Inspection is built around the drawing characteristics that affect assembly, not a generic cosmetic checklist. Typical checkpoints are overall length, thread gauge result, head and drive geometry, and surface condition. Certificates or special reports are supplied when they are included in the quotation.

• Material and surface-condition verification
• Critical-dimension and tolerance inspection
• Thread gauge, head and drive geometry checks
• Final appearance, count and packaging inspection

Optical / Vision Sorting Inspection

For suitable higher-volume orders, optical or vision sorting can be evaluated for measurable and visible characteristics such as overall profile, head presence, length, drive condition and selected surface defects. The approved drawing and agreed functional tests remain the acceptance criteria.

Drawing and Customization Requirements

For High Strength Carriage Bolt, send a dimensioned drawing or marked sample showing the standard reference, material/grade, size notation, thread data where applicable, domed carriage head, wrenching feature, shank or grip section and external thread, finish and packaging. Also identify mating-part material, joint load and service environment and installation tool and access because these points affect suitability for OEM machinery and equipment assembly. Any unmarked dimension remains subject to technical clarification before tooling or production.

Customization & Order Information

Frequently Asked Questions

Which application details should accompany the RFQ?

Describe mating-part material, joint load and service environment and installation tool and access. These details help determine whether the proposed geometry and material suit OEM machinery and equipment assembly.

Which dimensions are needed to quote this carriage bolt?

Provide diameter, overall length, pitch, thread or grip length, head dimensions and every shoulder, collar, bore or point dimension that affects the mating parts.

How should the material grade be specified for OEM machinery and equipment assembly?

State the required grade or alloy, mechanical condition, corrosion exposure and certificate requirement. The current material scope is heat-treated steel; property class, coating and test requirements to be stated.

Which interface dimensions should be controlled on this carriage bolt?

Confirm the domed carriage head, wrenching feature, shank or grip section and external thread, mating-part dimensions, assembly clearance and any functional gauge or installation test. These points should be identified on the drawing.

Can Hongyuan manufacture from a physical sample?

Yes. A sample supports identification and reverse review, but a drawing or signed dimensional report should define the final acceptance criteria.

Request a Quote

To quote High Strength Carriage Bolt, send the target quantity, dimensioned drawing or sample, material/grade, finish, inspection and packaging requirements, and delivery destination. For a carriage bolt used in OEM machinery and equipment assembly, please also identify mating-part material, joint load and service environment and installation tool and access. Hongyuan will confirm manufacturability and commercial terms against the approved specification.

Explore more Hongyuan Fastener products or contact us with your drawing and quantity.